Using the new capabilites of the Shape Builder tool in v1.4 to explode bitmaps into tiles Be sure to download the file and not the screen capture Knotwork created using: https://www.patreon.com/CelticOneDesign
This is so much easier and faster to do in v1.4.1 Step pattern created using: https://www.patreon.com/CelticOneDesign
Tech to create pencil like strokes Knotwork created using: https://www.patreon.com/CelticOneDesign